A teenager stabbed his father to death then calmly smoked a cigarette beside the body, a jury heard.

Shaun Leckenby had stayed close to dad Robert even after the 45-year-old was jailed in 2000 for killing his own brother during a family row, Newcastle Crown Court was told.

But emergency crews got a 999 call in the early hours reporting a stabbing at the home the pair shared in Park Street South, Castletown, Sunderland.

Police found Mr Leckenby dead on the floor with his son smoking a cigarette nearby.

Ben Nolan QC, prosecuting, said the 18-year-old told police: "That's the knife I killed my dad with," when they asked him about a weapon embedded in a cushion beside him on the night of the killing in January. Leckenby denies murder. The trial continues.